A／D单元是把外电路的模拟量，转换成数字量，然后送入PLC；D／A单元，是把PLC的数字量转换成模拟量，再送给外电路。作为一种特殊的I／O单元，它仍具有I／O电路抗干扰、内外电路隔离、与输入输出继电器（或内部继电器，它也是PLC工作内存的一个区，可读写）交换信息等等特点。
gilestar - 10G-XFP-ZRD-1549-32-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1550-12-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1550-92-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1551-72-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1552-52-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1553-33-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1554-13-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1554-94-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1555-75-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1556-55-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1557-36-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1558-17-AS - For Foundry - New
Agilestar - 10G-XFP-ZRD-1558-98-AS - For Foundry - New
